Carbureting device.



J. J. HAWXHURST & E. F. NICOLAI.

GARBURETING DEVICE. APPLICATION FILED SEPT. 23, 1911.

Patented Nov. 11, 1913.

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2 SHEETS-SHEET l.

Patented Nov. 11, 1913.

` 2 SHEETS-SHEBT 2.

J'. J. HAWXHURST L E. F. NIGOLAI.-

CARBURETING DEVICE. APPLIGATION FILED SEPT. 23, 1911.

bursting Devices,

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JOHN d'. HAWXHURST AND EDWARD 4l. NiICOLA, 0F NEW Yoan, N. Y."

CARBURETI'NG. DEVICE.

Specilcation of Letters Patent.

To all whom, t may concern.'

Be it known that we, JOHN and EDWARDV F. Nicolini,4 citizens of United States, and residents of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Multiple-Jet Carof which the following is a specification.

V The invention relates to devices for vaporizing liquid fuels and for effecting a admixture of air therewith for use in vinternal combustion engines.

The invention relates moreY articularly to carbureting devices .of the mu tiple jet type; and it has for its object toV provide a carbureting Adevice of simple construction adapted to maintain an explosive mixture of uniform density and of ample quantity under the various conditions met with in the operation of the internal combustion engine. A more efcient and satisfactory operation of the internal combustion engine is thusobtained and a considerable economy in theuse of the liquid fuel effected.

The nature of the invention will be best understood when described in connection with the accompanying drawings,in which- Figure 1 is an end elevation of the improved carbureting device. Fig. 2 is a longitudinal section taken on the line 2-2, Fig. 1. Fig. 3 is a fragmentary plan of the lower portion of the carbureter along the line 3&3, Fig. 2, and looking .in the direction of the arrows. Fig. 4 is a transverse section .taken on the line L -l, Fig. 3.

Similar characters of reference designate Vcorresponding parts throughout the several views.

Referring now to Figs. 1 and 2 of the drawings, 10 designates a casing subdivided by a wall 11. to forma float chamber 12, within which is centrally located a primary carbureting chamber 21, and a secondary carbureting chamber 13. An inlet pipe 14 communicatcswith the chamber 12 and is adapted to supply therethroughthe liquid; fuel, such as Vgasolene,

o froml a': suitable conf tainer. (not shown).` Aqnfeedle valve" 15 Af) controls "the inlet`i`1 ithrough the operation of fan annular float '16 which is the tree end of a lever i V17, pivotallyl ycolni'ecteel .t-o the casing 10 and Wfhdse otherarm is connected withthe val'vey `stem' 18 of the 'needle valve. f'lfhus, as gasoy'leae jllls the 'Chamber .12,5 ih? @that therein o the 'a duct 23, Chamber ofgvgasolene i y is somewhat A'greater thanto prevent overflow through same when the o o rises,' and its top bearingA against .the freef arm of lever 17, moves the same upwardly to close the passage-way. 14. In thuscom trolling the valve` 15 'through a lever 17, danger of flooding the carbureter isconsid erably reduced as the said valve is operated.

through this expedientunder a considerable force-much greater than that prevailing with carbureters in 'Whichzthe valve stem is actuated directly ofthe float arm of lever 17 is made sufficient to slightly overbalance the needle va'lve .15 and insure the instantaneous opening o-.the valve as 'the float recedes. f

About the casing 20 forming the `carburctingchamber -21 is arranged the annu-.- lar float 16, and withinsaid chamber L21..is the rimary carbureter jet i municates with the fuelchamber 12 through 21 communicates with l ratcnteaucvarroiaapplication and september 23,1911. serialnuesceia from thetloat. The weight,

22 which: com-a an air cage 25 to admit air about the jet 22,

the said air cagebeing normally closedby a valve piece 26 Whose outer face is preferably somewhat concaved, as shown, to reduce hissing during admission of 4theair` This valve piece is mounted loosely on an adjustable spindle 27 and'is held against a seat- 28 of the cage by means mounted about thespindle. A portion ot this spring is preferably made cylindrical and the remainderconical, to provide through the lat-ter portion a lighter tension during the first period ot the opening `of the valve, which tension increases as the valve continues to be opened. The tension of the spring may be varied by turning spindle 2T which is threaded at its outer end, and is provided with a shoulder 30 against which one end of the spring 29 bears, the other bearing against the valve piece 2G. The chamber 13 of the secondary carbureter is likewise provided. with a jet 31 opening into an outlet 32, the said chamber being in free communicationat the bot tom with the outside atn'iosphere, andthe said jet 31 communicating with the gasolene chamber 12 througha duct 35 which isgsetlto permit the maximumtiow desired..` i'Ifhe height `o ifjoet.-k 31 that of. the, jet 22 carbureter is lat ans angle.

*To the lower casing l0is arrangedytojhesecured an uppercasing 40,1 4providing 1.11)

of a spring 2f.)

per chambers 41 `and 42 and anA outlet charia.`

ber 43, the latter chamber being adapted to be connected tothe intake pipe (not shown) of an internal combustion engine. Chamber 4l is in direct communication with the chambei-*21; and chamber 42 with the outlet 32 of lchamber 13. A normally closed valve .44 closes the passage-way 45 between chambers 41 and 43, the same being under a suitable'tension afforded by a spring 46 bearing against the outer end of said valve piece 44 and a valve seat 47 at vthe opposite end of said chamber 43. Valve stem 4S of the valve piece 44 extends through the casing 40, and its end is connected with a suitable Operating lever 49,- whereby the passage-way 45 may be throttled as desired. A by-pass 50, hwever, is provided around valve 44 to admit suicient of the gaseous mixture to chamber 43 to enable the engine to run free; and, usually, also to enable the engine to be started without necessitating the opening of valve 44 which would tend'to cause the engine to race. The effective area of this by-pass may be adjusted by means of a screw 5l passing through the casingr'into said by-pass.

The chamber 42 is provided with an auxiliary air inlet valve 60, mounted about a sleeve 6l secured to the casing, and provided at itsinner end with a shoulder 62 between which and the said valve piece 60 is held a spring 63, preferably conical, to

Vprovide the necessary tension on the said valve piece. The outer face of this valve piece is concaved to reduce the hissing caused by the air4 entering through the valve; and, for a similar reason, a lip 74 is arranged to project from valve cage of casing 40. The tension of the spring may vbe varied by turning the sleeve 6l whose outer'eiid is screwed into and passes through the casing 40. The chamber 42 is, furthermore, provided with a plurality of superimposed outlet valves 64, 65, and 66, the latter seating against the valve seat 47 and being' provided with a passageway 67 which is normally closed by the valve piece 65. This valve piece in tuin is provided with a passage-way 68 normally closed bythe valve piece 64. A valve stem 69 extends from valve piece 64 through the valve pieces 65 and 66 and the valve seat 47, the said valve I pieces 65 and 66 being provided with respecvce tive sleeves 7 0 and 7l fitting over the said stem 69. The stem 69 terminates Within chamber 43 at a predetermined distance from the outer face of the valve 44, the sleeve somewhat farther from the said valve seat 44, and the sleeve 7l still farther. With this arrangement, as the stem 4S is'forced inwardly through the lever 49, valve 44 is first opened; and then, successively, the valve 64 through the face of valve 44 malring contact with the listem 69, then the valve 65 through sleeve 70, and nally also the valve 66 through its sleeve-71. n this manner, constantly increasing areas of openvalve pieces 64, 65, 66 are open, the ten- Y sion on stem 48 is increased by that of a spring 72. This spring is mounted Within the outer end of sleeve 6l and bears against a plunger 73 supported in the-said sleeve 61 and arranged lto bear against the valve.

64 to maintain the said valves 64, 65 and 66 normally in closed position.

With the multiple jet carbureter herein `set forth it will be understood that priming of the carbureter is quite unnecessary for the area of outlet of the primary carbureter may be made sutliciently small to establish a proper .starting mixture, the secondary carbureter providing the additional gaseous mixture as required. The two carbureters may operate quite independently of. each other as well as in combination.

A considerable economy of space, as well as of fuel, is effected by this carbureter. The vaporized liquid is drawn through and around the various valves in such a manner as to be .thoroughly mixed with the proper proportion of air drawn into the carbureter, and provides a highly eiiicient' mixture at all speeds desired, the quantity supplied being controlled as hereinbefore set forth.

, We claim l. multiple jet carbureting device, coinprising: a plurality of casings provided. with suitable inlets and outlets and forming independentfcarbureting chambers; a fuel jet in eaclrof said chambers; means to supply liquid fuel thereto; means to admit air to the respective carbureters; means controlling the outlets from the respective carbureters, one of said means including a plurality of controlling members adapted to successively present new areas of outlet; and

actuating means for said controlling means,

the actuating means for the respective controlling meansl being normally independent of each other and one of the same being adapted to first operate one of said controlling means a predetermined amount and thereupon to engage'the other of-said actuating means to successively open the co1F v responding outlets.

2. A multiple jet carbureting device, comprising: a plurality of casings provided with suitable inlets and outlets and forming independent carbureting chambers; va

fuel jet in each of said chambers; means to supply liquid fuel thereto; means to admit air to the respective carbureters; means to admit an additional supply of air to one of said carbureters as required; means control- .invasie i ling the outlets trom the respective carbureters, one olf said means including a plurality et controlling members adapted to successively present new areas ot outlet; and actuating means for the respective controlling means, the actuating means for the respective controlling means being nor'- mally independent of each other and one ci the same being adapted to lirst operate one 'et said controllingmeans a predeterinined amount and thereupon to engage the other of said actuating means to successively open the correspondin outlets.

3. A multiple )et carbureting device, comprising: a plurality et casings provided with suitable inlets and outlets and forming independent .carbureting chambers; a fuel jet in each of said chambers; means to supply liquid fuel'thereto; means to admit air tothe respective earbureters; means controlling the outlets. il'rom the respective earbureters, one oit said means including a plurality of controlling members adapted to successively present new areas et outlet; and actuating means :tor said controlling means, the'ectuating means for the respective controlling means being normally independent oi' each other and the first of the saine being adapted to first operate the corresponding controlling means apredetermined amount and thereupon to engage the. other of said vactuating means to successively operate the plurality of controlling members.

4f. A earbureting device comprising: a plurality of casings providing a primary carbureting chamber anda secondary can bursting chamber independent thereof, the respective chambers being provided with suitable inlets and outlets; a i'uel jet in each of 'said chambers; a loat chamber to supply liquid fuel to said primary jet andv chainber, and means ailording communication between said float chamber and the said secondary jet and carbureter; ineansto admit i controlling the flow of gaseous mixture from the primary carbureter; a plurality of valves controlling the dow of gaseous mixture from the secondary carbureter to provide a successively increasing area ol" outlet from thesame; means to open said primary carbureter valve; and means con nected with said secondary carbureter 'valves adapted to b successively engaged by the said primary carbureter valve when the same is opened a predetermined amount.

.5,21 carbureting device comprising: a plurality of casings containing a primary carbureting device and a secondary carbureting device independent' thereof and adapted to discharge into a common outlet; and means controlling the discharge :troni said earbureting devices into the common outlet, including a valve controlling the dis charge from the primary carbureting de vice; a plurality of superimposed valves controlling the discharge from said sec ondary carbureting device; all of said con trolling` valves lying in the saine longitudi nal axis; a stem extending from the outermost `valve of said secondary carbure-ter valves and terminating at a predetermined distance from said primary carburetor valve to be vengaged thereby when the same is movedtoward said stem; sleeves extending from the other of said plurality oi valves; surrounding said stein and terminating suc cessively at predetermined distances from the end of said stein to be engaged upon the further movement oi2 the primary carbun reting valve toward the said stem; and re-v silient means acting against said plurality of valves. i Signed at New York, in the county oit' New York, and Stale of Allew York, this 20th day off September A. D. 1911.

JOHN J. llAVXl-IURST.

EDWARD F. NICOLAI. Witnesses Fininit. F. SCHUETZ; Louisa E. Simson.

topics or' this patent may Toc obtained for :live cents each, by addressing; th/e Commissioner of Patents,

Washlngtom. C.

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